I have 1 of each new in the box..i will sell both of them for 250 through paypal and ship them to you for free. Retail on these is 370. The 16 is the high speed (6.2:1) and the 20 is the low (4.3:1)

I have plenty of pictures but i cannot figure out how to post them. i will be happy to email them upon request. Just shoot me an email with questions or picture requests to
obxcaptain@gmail.com

Thanks for looking..